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US 2019/0316419 A1Published application
System for rotary drilling by electrical discharge
AssigneeI.T.H.P.P.
InventorsFrédéric BAYOL, Boni DRAMANE, Jean-Louis GAUSSEN, Christophe GOEPFERT
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Abstract
The invention relates to a downhole device for rotary drilling, including a power generator installed at the end of a series of rods; a pulse generator which is mechanically and electrically connected to said electricity generator; an electric drilling tool; and an electrical sliding switch system. The invention is useful in the field of drilling by electrical discharge.
Claims19
Downhole device for rotary drilling comprising:
- an electricity generator installed at the end of a string of drill pipes and/or drill collars and converting the hydraulic drilling fluid into electrical energy;
- a pulse generator mechanically and electrically connected to the said electricity generator, and powering a system of electrodes carried by the drilling tool;
- an electric drilling tool, mechanically and electrically connected to the said pulse generator, driven in rotation by the string of drill pipes and/or drill collars and comprising a system of active and passive electrodes;
- and
- an electrical slide switch system.
2 more elements
Dependencies are inferred from the claim text.